Gas-lamp suspension.



J. & G. KEITH.

GAS LAMP SUSPENSION.

APPLIOATION FILED PEB.9, 1912.

mm w J h ,0 mm w m L a I m N W 15 5 c M L 0 70 r t a n P. m

U 0 I- h COLUMBIA PLANOGRAPM $0.. WASHINGTO D. c.

J. & G. KEITH.

GAS LAMP SUSPENSION.

APPLICATION IILED FEB. 9, 1912.

Patented Aug. 20, 1912.

3 8HEETS-SHBBT 2.

- [22 van 021: Jam es ffci i1: 3 6e orge Keith A'hforngy jinn-mesCOLUMIIA MW" CO IAIHINONN; I. Ca

J. & G. KEITH.

GAS LAMP SUSPENSION.

APPLICATION FILED F234), 1912.

3 SHEETS-SHEET 3.

Patented Aug. 20, 1912.

' fzz 1/4912 tors @ZiZZZfiS' fi ej $12 0 eorgefl Hz coLummA I'LANDGRAPHca. WASHINGTON. D c.

UNITED STATES PATENT OFFICE.

JAMES KEITH AND GEORGE KEITH, OF LONDON, ENGLAND.

GAS-LAMP SUSPENSION.

To all whom it may concern Be it known that we, JAMES KEITH and GEORGEKEITH, subjects of the King of the United Kingdom of Great Britain andIreland, and residing at London, England, have invented a certain newand useful Improvement in Gas-Lamp Suspension, of which the following isa specification.

This invention relates to gas supply connections for gas lamps equippedwith gear for raising and lowering the lamp, with or without traversinggear.

Heretofore a lamp of the type adapted to be traversed and raised andlowered was usually suspended from a carriage provided with pulleysadapted to run on a wire rope or the like, and the gas supply wasconducted to the lamp by means of a flexible tube or jointed tube.

The primary object of the invention is to dispense with the said tube,to which end provision is made for making and breaking a gas tight jointbetween the lamp and a source of supply and at the same time affording asafety catch for supporting the lamp when in position, independently ofthe running wire rope or the like.

The invention is illustrated in the accompanying drawings in which-Figures 1 and 2 are part elevations, part vertical sections showing inoperative and inoperative positions devices applicable to gas lampsprovided with traversing and raising and lowering gear; Fig. 3 is anelevation, partly in section, at right angles to Fig. 1; Figs. 4 to 9show modifications hereinafter referred to.

Like reference characters denote similar parts in the several figures ofthe drawings.

Referring to the construction shown in Figs. 1, 2 and 3, for traversingthe lamp there is employed a carriage A preferably provided with a pairof downwardly extending wings or shields B disposed on opposite sides ofa stretched wire rope C or the like and having a pulley or pulleys Dadapted to run on said rope or the like; connected to said carriage A isa shackle E or the like to which the raising and lowering rope F isattached. The rope F passes around a pulley G connected adjacent the topof the lamp to a stirrup piece or the like which supports the lamp, andaround a pulleyH or pulleys, mounted on the carriage A.

On the rope C or the like, adjacent the point from which the lamp isnormally sus- Specification of Letters Patent.

Patented Aug. 20, 1912.

Application filed February 9, 1912. Serial No. 676,624.

pended, is fixed a hanger I connected at its lower end to a hollowbracket member J which is fixed to the rope C or the like and throughwhich the gas supply passes at K from a supply pipe L which maintains anunbroken connection between the bracket and the main supply, said pipe Lbeing connected at its ends by suitable ball unions or like joints tothe hollow bracket member J and to a junction with the main supply, thesaid pipe L being preferably supported at intervals from said rope C orthe like.

The hollow bracket member, J is provided with an extension M near itsupper end for carrying a guide pulley N around which passes thetraversin rope O or the like connected to the carriage A, as at P; atits lower end the bracket terminates in a horn or hook-like part Q, towhich is fitted a preferably detachable seat R preferably of sphericalform having a ground joint with a preferably detachable member Spreferably of cup-like form at the upper end of a stirrup piece T whichis so fitted that it tends to assume a vertical position, and the lowerend of which is connected to the top of the lamp, as aforesaid. A shortgas sup ply tube U couples the member S with a connection V forattachment to the upper end of the lamp. The guide pulley N ispreferably inclined to permit the top portion of the traversing rope Oto clear the side of the bracket member J and the pipe L, thebracket-member J being kinked or off-set, as shown at. W, Fig. 3, topermit the rope O to pass freely when the carriage A is being traversed.

Assuming the lamp to be suspended in normal position and the main gassupply shut off, the rope F is pulled to raise the lamp, and with it thestirrup piece T and member S, to such an extent that the last mentionedparts will clear the hook or hornlike part Q on the bracket member J.The carriage A is then traversed in the usual way by paying out thetraversing rope O and winding in the hoisting and lowering rope F, andthe lamp brought to the desired position at which it is to be lowered.\Vhen the lamp is to be replaced, it is first raised and the carriage Atraversed until it en gages with a pin X or other stop device on thebracket member J, in which position the lamp is lowered into place; themember F engages with its seat R, being guided int position by thestirrup-piece cooperating with the lower part of the bracket member J.

The part Qof the bracket member J i carried downward in such manner asto form a deflecting guide as at Y, so that when thi: lamp is moved toits normal position, the stirrup piece T being located below thehooklike part Q, the lamp can be raised and the stirrup-piece will bedeflected laterally by with a discharge opening normally closed 7 by aplug cock 1 one end of which is fitter with a lever y so arranged that apin 0 carried by means of a strap adjustably secured to one of theshields B will enter the fork of the lever if and move the cock in onedirection or the other when the carriage is moved.

In modifications shown in Figs. 4 to 8, applicable more particularly tothe case where the lamp is suspended from a column of swan-neck orlike'type or from a bracket or root and raising and lowering gear onlyis provided there being no occasion for providing devices for traversingthe lamp, means are employed to assist the member S to clear the horn Qwhen the lamp its to be unshipped, said means comprising an arm or armsa pivoted to the top of the stirrup piece T so that when raisedsufficiently it or they engages or engage with a pin or pins or aprojection or projections Z) (Figs. 4t and 5) or abutments 6, Figs. 7and 8, and when the lamp is againlowered, the arms a take a fulcrum fromthe said pins or abutments, the stirrup piece T being swung outward sothat the member S clears the horn Q. The unshipping operation is thusetfected without interference with the ordinary shipping operation, asthe arms a, do not come in contact with the pins or abutments until thestirrup T has been raised higher than is necessary to pass the member Sinward over the horn Q; the arms a are each provided with a hook-part,as at 0, which prevents the stirrup piece T from being raised too far byengaging with said pins or abutments, and said arms are prevented fromdropping beyond a predetermined point by means of stops, such asindicated at cl, Figs. 7 and 8; but they are free to swing upward ashigh as is necessary. The stirrup piece T is preferably formed of twotubes, and the member S is formed with a projecting lip 6 (Fig. 8)extending beyond the ground portion of said member so that the saidground portion may not be damaged by scraping over the horn Q.

In the arrangement shown in Figs. 6, 7 and 8, the lamp is adapted to beraised and lowered by a single purchase rope. In the case where a numberof lamps, each working with an automatic lighter (which, of course, iscarried by. the lamp, and moved along with the same) are controlled from'one point by the operation of starting or stopping a compressor, therewould ordinarily be a tree blow through of low pressure gas from theseat R for the member S, as soon as the lamp was removed. To avoid this,we fix a valve, 6. 9., a ball valve f, Fig. 8, in the aperture of theseat R, which valve tends to shut by the action of a spring i g, as soonas the lamp is removed. On the member S is provided a pin h (Fig. 8) ofsufficient length to insure that the valve f will be pushed off its seatwhen the member S is seated on the part B, the pin it being also of sucha length that it is protected from damage in passing the horn by theprojecting lip e on the member S. In the example shown in Figs. 6, 7 and8, where the stirrup piece T is formed of two tubes,

an automatic lighter may be fixed on the top of the stirrup plece, oneof the tubes serving to carry the bypass supply, and the other tubeserving to carry the main supply.

Having now described our invention, what we claim and desire to secureby Letters Patent of the United States is 1. The combination with meansfor raising and lowering a gas lamp, of cooperating gas conductingmembers having a gas conduit, and devices operatively connected with theraising and lowering means for making and breaking a joint between saidmembers by the operation of the raising and lowering means.

2. In combination with means for raising and lowering a gas lamp, abracket member having a gas conduit in communication with a source ofgas supply, said bracket me1n+ ber'being formed adjacent its gasoutlet'end with a part aiii'ording a seat, a member having a gasconnection with the lamp and operatively connected with said raising andlowering means so as by the operation of said means to make and break ajoint'with said seat, substantially as described.

In combination with means for raising and lowering a gas lamp, a bracketmember having a gas conduit in communication with a source of gassupply, said bracket formed with a seat and including a horn-likeguiding part, a member having a gas connection with the lamp and adaptedto form a tight joint with said seat, and a device con necting said lastmentioned member with said raising and lowering means and adapted to beguided by said horn-like part.

l. In combination with means for raising and lowering a gas lamp, abracket member having a gas conduit in communication with a source ofgas supply, said bracket formed with a seat, said bracket being alsoformed with a receptacle for water of condensation, a member having agas connection with the lamp and adapted to form a gas tight joint withsaid seat, and a device connecting said last mentioned member with theraising and lowering means.

5. In combination with means for raising and lowering a gas lamp, abracket member having a gas conduit in communication with a source ofgas supply, said bracket member formed adjacent its gas outlet end witha part affording a seat, a projection on the bracket member. a stirruppiece connectiblc to the lamp and having an arm adapted to engage saidprojection and to take a fulcrum from said projection when the lamp isbeing lowered, a member carried by said stirrup piece and adapted toform a joint with said seat, said last mentioned member having a gasconnection with the lamp.

6. In combination with means for raising and lowering a gas lamp, abracket member having a gas conduit in communication with a source ofgas supply, said bracket member formed adjacent its gas outlet end witha part affording a seat, a valve adapted normally to engage said seat, amember having a gas connection with the lamp and adapted to form a jointwith said seat, and to disengage the valve from the seat, and devicesconnecting said last mentioned member with said raising and loweringmeans, substantially as described.

7. In combination with means for raising and lowering a gas lamp, abracket member having a gas conduit in communication with a source ofgas supply, said bracket member formed with a part affording a seat, aprojection on the bracket member, a stirrup piece composed of two tubes,said stirrup piece being connectible to the lamp and to the raising andlowering means and having an arm adapted to engage said projection andto take a fulcrum from said projection when the lamp is being lowered,and a member carried by said stirrup piece and adapted to form a jointwith said seat, substantially as described.

8. In combination with means for raising and lowering a gas lamp, abracket member having a gas conduit in communication with a source ofgas supply and formed with a part affording a seat, a stirrup piececomposed of two tubes and conneetible to the lamp and to the raising andlowering means, and a member carried by said stirrup piece and adaptedto form a joint with said seat.

9. The combination with a traveling carriage, of a bracket member havinga gas conduit in communication with a source of gas supply and formedadjacent its gas outso as by the operation of said raising and loweringmeans to make and break a joint with said seat.

10. In combination with means for rais ing and lowering a gas lamp, abracket member having a gas conduit in communication with a source ofgas supply, said bracket formed with a seat and with a guiding part, amember having a gas connection with the lamp and adapted to form a gastight joint with said seat, and a device connecting said last mentionedmember with said raising and lowering means and adapted to be guided bysaid guiding part.

11. In combination with a traveling carriage, means connected with saidcarriage for raising and lowering a gas lamp, a bracket member having agas conduit in communication. with a source of gas supply, said bracketformed with a seat and with a receptacle for water of condensation,means for t aversing the carriage in relation to the bracket member,means for discharging said receptacle on movement of the carriage, amember having a gas connection with the lamp and adapted to form a gastight joint with said seat, and a device connecting said last mentionedmember with the raising and lowering means. 7

12. In combination with means for raising and lowering a gas lamp, abracket member having a gas conduit in communication with a source ofgas supply, said bracket member formed with a hook-like catch and with apart affording a seat, a stirrup piece connectible to the lamp andadapted to engage said catch, and a member carried by said stirrup pieceand adapted to form a joint with said seat, said last mentioned memberhaving a gas connection with the lamp.

13. In combination with means for raising and lowering a gas lamp, abracket member having a gas conduit in communication with a source ofgas supply, said bracket member formed with a part affording a seat, aprojection on the bracket member, a stirrup piece composed of two tubes,said stirrup piece being connectible to the lamp and to the raising andlowering means and having an arm adapted to engage said projection toprevent the stirrup piece from being raised too far, and a membercarried by said stirrup piece and adapted to form, a joint with saidseat, substantially as described.

14. The combination with means for raising and lowering a gas lamp of abracket member having a gas conduit in communication with a source ofgas supply and formed with a seat and with a hook-like catch, a tubularstirrup piece connectible to the raising and lowering means and adaptedto engage said catch, and a member carried by said stirrup piece andadapted to form a joint with said seat, said last mentioned .memberhaving a gas connection with the lamp.

15. The combination with means for raising and lowering a gas lamp, of amember having a gas conduit in communication with a source of gas supplyand formed with a part affording a seat, a catch, a member having a gasconnection with the lamp and adapted to form a joint with said seat, anda device adapted to be engaged by said catch, said device connectingsaid last mentioned member with the raising and lowering means.

16. The combination with means for raising and lowering a gas lamp, of abracket member having a gas conduit in communication with a source ofgas supply and affording a seat, a catch serving as a guide, a memberhaving a gas connection with the lamp and adapted to form a joint withsaid seat, and a verticallymovable device connecting said member withthe raising and lowering means, said device being guided in its upwardmovement by said catch and adapted to be lowered into engagement withsaid catch.

17. The combination with means for raising and lowering a gas lamp of abracket member having a gas conduit in communication with a source ofgas supply and aiiording a seat, a catch, a member having a gasconnection with the lamp and adapted to form a joint with said seat, aprojection on the bracket member, a device connecting said lastmentioned member with the raising and lowering means and adapted toengage said catch, said device having an arm adapted to engage saidprojection and to take a fulcrum from said projection when the lamp isbeing lowered so as to clear said catch.

18. The combination with means for raising and lowering a gas lamp, andmeans for traversing the said lamp,of cooperating gas conductingmembers, and devices operatively connected with the raising and lowering means for making and breaking a joint between said members by theoperation of the raising and lowering means.

19. The combination with means for raising and lowering a gas lamp, andmeans for traversing said lamp, of a bracket member having a gas conduitin communication with a source of gas supply, said bracket member beingformed adjacent its gas outlet end with a part affording a seat, and amember having a gas connection with the lamp and operatively connectedwith said raising and lowering means so as by the operation of with aseat and including a horn-like guiding part, a member having a gasconnection with the lamp, and adapted to form a gastight joint with saidseat, and a device connecting said last-mentioned member with saidraising and lowering means and adapted to be guided by said horn-likepart.

21. In combination with means for raising and lowering a gas lamp, andmeans for trm'ersing the said lamp, a bracketmember having a gas conduitin communication with a source of gas supply, said bracket member formedwith a seat and with a receptacle for water of condensation, a memberhaving a gas connection with the lamp and adapted to form a gas-tightjoint with said seat, and a device connecting said last men- 'tionedmember with the raising and lowering means.

22. In combination with means for raising and lowering a gas lamp, andmeans for traversing the said lamp, a bracket member having a gasconduit in communication with a source of gas supply, said bracketmember formed with a seat and with a receptacle for water ofcondensation, a member having a gas connection with the lamp and adaptedto form a gas-tight oint with said seat, a

device connecting said last mentioned member with the raising andlowering means, and means for discharging the receptacle on theoperation of the traversing means.

23. In combination with means for raising and lowering a gas lamp, andmeans for I traversing said lamp, a bracket member having a. gas conduitin communication with a source of gas supply, said bracket member formedadjacent its gas outlet end with a part affording a seat, a valveadapted normally to engage said seat, a member having a gas connectionwith the lamp and adapted to form a joint with said seat, and todisengage the valve from the seat, and devices connecting said lastmentioned member with said raising and lowering means, substan- 'tiallyas described.

24. The combination with means for raising and lowering a gas lamp, ofmeans for traversing said lamp, cooperating gas conducting members, anddevices operable by the act of raising and lowering the lamp forbreaking and making a joint between said members.

25. The combination with means for raising and lowering a gas lamp, ofmeans for traversing said lamp, a bracket member having a gas conduit incommunication with a source of gas supply and formed with a partaffording a seat, and a member having a gas connection with the lamp andadapted to be raised and lowered, so as to break and make a jointbetween said members by the act of raising and lowering the lamp.

26. The combination with means tor raising and lowering a gas lamp, ofmeans for traversing the said. lamp, a member having a gas conduit incommunication with a source of gas supply and provided with a seat, amember having a gas connection with the lamp and adapted to make a jointwith said seat, and a device conncctiblc to the lamp and to the raisingand lowering means whereby said joint is broken when the lamp islowered.

27. In combination with means for raising and lowering a gas lamp, meansfor traversing said lamp, a bracket member having a gas conduit incommuni -atiou with a source of gas supply, said bracket member beingprovided with a detachable seat, a member having a gas connection withthe lamp and operatively connected with said raising and lowering meansso as by the operation of said means to make and break a joint with saidseat, substantially as de scribed.

28. In combination with means for raising and lowering a gas lamp, meansfor traversing said lamp, a bracket member having a. gas conduit incommunication with a source of gas supply, said bracket formed with aseat and with a guiding part, a member having a gas connection with thelamp and adapted to form a gas tight joint with said seat, and a deviceconnecting said last mentioned member with said raising and loweringmeans and adapted to be guided by said guiding part.

29. In combination with means for rais ing and lowering a gas lamp, andmeans for traversing said lamp, a bracket member having a gas conduit incommunication with a source of gas supply, said bracket member formedwith a hook-like catch and with a part affording a seat, a stirrup piececonnectible to the lamp and adapted to engage said catch, and a membercarried by said stirrup piece and adapted to form a joint with saidseat, said last mentioned member having a gas connection with the lamp.

230. In combination with means for raising and lowering a gas lamp,means for traversing said lamp, a bracket member having a gas conduit incommunication with a source of gas supply, said bracket member formedadjacent its gas outlet with a part affording a seat, a valve adaptednormally to close said outlet, a member having a gas connection with thelamp and adapted to form a oint with said seat, and fitted with a pin todisengage the valve from the outlet, anddevices connecting said lastmentioned member with said raising and lowering means, substantially asdescribed.

31. In combination with means for raising and lowering a gas lamp, abracket member having a gas conduit in communication with a source ofgas supply, said bracket member having a part attording a seat, aprojection on the bracketmember, a member connectible with the lamp, andhaving a part adapted to engage said projection to prevent said memberfrom being raised too far, and a member carried by said last mentionedmember and adapted to form a joint with said seat, substantially asdescribed.

32. The combination with means for raising and lowering a gas lamp, andmeans for traversing the same, of cooperating gas conducting members,one of which all'ords a catch, and devices opcratively connected withthe raising and lowering means for making and breaking a joint betweensaid members by the operation of the raising and lowering means.

33. The combination with means for raising and lowering a gas lamp, andmeans for traversing said lamp, of a member having a gas conduit incommunication with a source of gas supply and formed with a partaffol-ding a seat, a catch, a member having a gas connection with thelamp and adapted to form a joint with said seat, and a device adapted tobe engaged by said catch, said device connecting last mentioned memberwith the raising and lowering means.

3-1. The combination with means for raising and lowering a gas lamp, andmeans for traversing said lamp, of a bracket member having a gas conduitin communication with a source of gas supply and affording a seat, acatch serving as a guide, a member having a gas connection with the lampand adapted to form a joint with said seat, and

a vertically movable device connecting said member with the raising andlowering means, said device being guided in its upward movement by saidcatch and adapted to be lowered into engagement with said catch.

-35. The combination with means for raising and lowering a gas lamp of abracket member having a gas conduit in communication with a source ofgas supply and affording a seat, a catch, a member having a gasconnection with the lamp and adapt ed to form a joint with said seat, aprojection on the bracket member, a device connecting said lastmentioned member with the raising and lowering means and adapted toengage said catch, said device having an arm adapted to engage saidprojection on upward and downward movement of said device, so as toprevent excess upward movement and to take a fulcrum from saidprojection on its downward movement.

36. The combination with a rope, a gas conducting pipe suspended fromsaid rope, a fixed bracket member having a gas conduit in communicationwith said pipe and provided with a seat at its outlet end, a carriage,means for causing said carriage to travel along said rope toward andfrom said bracket member, means connected to said carriage for raisingand lowering a gas lamp, and a gas conducting member connectible to thelamp and to said raising and lowering means and adapted to make a jointwith said seat.

37. The combination of a bracket member having a gas conduit incommunication with a source of gas supply and formed with a seat, acarriage adapted to travel in relation to said bracket, a pulley on saidcarriage, a stirrup piece, a pulley on said stirrup piece, a ropeconnected to said carriage and passed around both said pulleys, and amember carried by said stirrup piece and adapted to form a joint withsaid. seat, said last mentioned member having a gas connection with thelamp.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

JAMES KEITH. GEORGE KEITH.

' Vitnesses:

WALLACE CRANs'roN FAIRWEATHER, JOHN MOCLEARY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. (1.

